Blunderbus or Blunderbuss: How To spell?
The word Blunderbus is misspelled against Blunderbuss, a noun meaning "A short gun or firearm, with a large bore, capable of holding a number of balls, and intended to do execution without exact aim."
Blunderbuss has double 'ss' in the end mispronounced as 's'Remember double 'SS' appears in the end of this word which should not be misspelled with single 'S'
Wrong Spelling:  blunderbu-s  Correct Spelling:  blunderbu-ss 
Check more misspelled words of Blunderbuss to spell it correct.